dont worry sometimes they dont sit til the second one is layed ...ok i checked in and the moms sitting in the nest but not on the egg second egg has not yet come i put more nesting material but the crack happened after the egg was laid i came to check on the birds and neither mom or dad were on the egg and i noticed the small dent.
Yes, it is a little young .. not too young for the egg to be fertile, but possibly too young to be a good parent should the egg hatch. If the egg is being incubated by the parents, then you can "candle" it in about 5 days to see of there is an embryo growing. Candling is just shining a light source through the egg to see if there are any veins developing. You can search on the term and find lots of posts.Next update more questions for a newbie the pigeon that produced the egg is only 4-5 months old. isn't that a little young is it possible the egg is not fertile how can I tell?